don't include image version when checking for existing containers
don't include image version when checking for existing containers

So we complain with "already running" rather than "Found another
running container" when encountering a 'weave' container running a
different image version. Similarly, we remove stopped 'weave'
containers regardless of version.

Ditto for weavedns.

Which is all how it used to work.

kidaa/weave,ycaihua/weave,n054/weave,weaveworks/weave,dpw/weave,aaam/weave,n054/weave,awanke/weave,rade/weave,awh/weave,philipz/weave,Lawouach/weave,squaremo/weave,ycaihua/weave,narry/weave,awh/weave,squaremo/weave,cgvarela/weave,beni55/weave,achanda/weave,BWITS/weave,Lawouach/weave,achanda/weave,aaam/weave,paulbellamy/weave,narry/weave,BWITS/weave,bboreham/weave,Lawouach/weave,bboreham/weave,cgvarela/weave,inercia/weave,rade/weave,BWITS/weave,paladin74/weave,dpw/weave,awanke/weave,ycaihua/weave,philipz/weave,2opremio/weave,achanda/weave,dpw/weave,paulbellamy/weave,beni55/weave,bboreham/weave,philipz/weave,19hz/weave,2opremio/weave,squaremo/weave,narry/weave,squaremo/weave,inercia/weave,errordeveloper/weave,ycaihua/weave,beni55/weave,19hz/weave,BWITS/weave,OnePaaS/weave,n054/weave,BWITS/weave,bboreham/weave,paladin74/weave,Lawouach/weave,awh/weave,tomwilkie/weave,awanke/weave,awanke/weave,kidaa/weave,beni55/weave,OnePaaS/weave,inercia/weave,aaam/weave,errordeveloper/weave,awh/weave,achanda/weave,bboreham/weave,weaveworks/weave,ycaihua/weave,paladin74/weave,tomwilkie/weave,errordeveloper/weave,19hz/weave,awh/weave,paulbellamy/weave,OnePaaS/weave,cgvarela/weave,errordeveloper/weave,2opremio/weave,rade/weave,kidaa/weave,rade/weave,OnePaaS/weave,dpw/weave,kidaa/weave,awanke/weave,paulbellamy/weave,inercia/weave,tomwilkie/weave,2opremio/weave,tomwilkie/weave,philipz/weave,kidaa/weave,aaam/weave,errordeveloper/weave,weaveworks/weave,narry/weave,cgvarela/weave,achanda/weave,cgvarela/weave,2opremio/weave,rade/weave,narry/weave,aaam/weave,philipz/weave,tomwilkie/weave,paladin74/weave,weaveworks/weave,n054/weave,n054/weave,beni55/weave,dpw/weave,squaremo/weave,paladin74/weave,19hz/weave,inercia/weave,OnePaaS/weave